Wasatch Advisors Reports 3.53M CWST Stake

Wasatch Advisors filed a Schedule 13G reporting beneficial ownership of 3,531,594 shares of Casella Waste Systems Inc Class A common stock as of 06/30/2026.

Rhea-AI Filing Summary

Wasatch Advisors filed a Schedule 13G reporting beneficial ownership of 3,531,594 shares of Casella Waste Systems Inc Class A common stock as of 06/30/2026. The filing states this equals 5.6% of the class and lists Sole Voting Power: 2,602,315 and Sole Dispositive Power: 3,531,594.

The filing is signed by Mike Yeates as CEO on 07/09/2026. The disclosure identifies Wasatch Advisors (Delaware) and its Salt Lake City address and reflects a passive beneficial‑ownership filing under Schedule 13G.

Insights

Institutional Ownership Analyst

Large passive stake disclosed: 3,531,594 shares (5.6%).

Wasatch Advisors reports beneficial ownership of 3,531,594 shares of Casella Waste Systems Class A as of 06/30/2026. The filing records sole voting power over 2,602,315 shares and sole dispositive power over 3,531,594 shares, indicating direct control of disposition decisions.

Ownership at 5.6% is below common 10% reporting thresholds for activist signaling; the filing is routine for institutional disclosure. Subsequent filings may show changes in position or voting alignment ahead of corporate votes.

Key Figures

Filing type: Schedule 13G Shares beneficially owned: 3,531,594 shares Percent of class: 5.6% +3 more

6 metrics

Filing type Schedule 13G Beneficial ownership disclosure

Shares beneficially owned 3,531,594 shares as of <date>06/30/2026</date>

Percent of class 5.6% Class A common stock

Sole Voting Power 2,602,315 shares reported in Item 4(i)

Sole Dispositive Power 3,531,594 shares reported in Item 4(iii)

Signature date 07/09/2026 Signed by Mike Yeates, CEO

Key Terms

Schedule 13G, Sole Dispositive Power, Beneficially owned

3 terms

Schedule 13G regulatory

"Wasatch Advisors filed a Schedule 13G reporting beneficial ownership"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Sole Dispositive Power regulatory

"Sole power to dispose or to direct the disposition of: 3,531,594"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Beneficially owned financial

"Amount beneficially owned: 3,531,594 (b) Percent of class: 5.6 %"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake did Wasatch Advisors report in CWST?

Wasatch Advisors reported beneficial ownership of 3,531,594 shares of Casella Waste Systems Class A, equal to 5.6% of the class as of 06/30/2026.

Does the Schedule 13G filing show voting control for Wasatch Advisors (CWST)?

The filing lists Sole Voting Power of 2,602,315 shares and Sole Dispositive Power of 3,531,594 shares, indicating Wasatch has direct voting and disposition authority over those shares.

What is the filing date and who signed the CWST Schedule 13G?

The Schedule 13G is dated 06/30/2026 for ownership and was signed by Mike Yeates, CEO on 07/09/2026, per the disclosed signature block.

Is the Wasatch Advisors disclosure an active takeover or passive stake in CWST?

The filing type is Schedule 13G, which typically reports passive institutional ownership rather than an active acquisition strategy; the filing itself does not state activist intent.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/09/2026 - 01:51 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Casella Waste Systems Inc

(Name of Issuer)

CL A

(Title of Class of Securities)

147448104

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 147448104

1

Names of Reporting Persons

Wasatch Advisors LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,602,315.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,531,594.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,531,594.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.6 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Casella Waste Systems Inc
(b)	Address of issuer's principal executive offices: 25 Green Hill Lane, Rutland, US-VT, 05701, US
Item 2.
(a)	Name of person filing: Wasatch Advisors LP
(b)	Address or principal business office or, if none, residence: 505 Wakara Way, 3rd Floor, Salt Lake City, 84108, United States
(c)	Citizenship: DELAWARE
(d)	Title of class of securities: CL A
(e)	CUSIP Number(s): 147448104
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 3,531,594
(b)	Percent of class: 5.6 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2,602,315
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 3,531,594
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Wasatch Advisors LP

Signature:	Mike Yeates
Name/Title:	CEO
Date:	07/09/2026